Several years ago, someone said to me that it doesn’t matter what you believe as long as you have “a faith.” That sounds good, but it simply is not true. Jude, in his brief letter, exhorted his readers to “earnestly contend for the faith which was once delivered unto the saints” (v. 3).Paul, as he was nearing the end of his time on earth (for he would soon be martyred), wrote t...